--- old/src/share/vm/gc_implementation/g1/ptrQueue.hpp	2010-11-10 13:11:10.000000000 +0100
+++ new/src/share/vm/gc_implementation/g1/ptrQueue.hpp	2010-11-10 13:11:10.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -22,6 +22,12 @@
  *
  */
 
+#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_PTRQUEUE_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_G1_PTRQUEUE_HPP
+
+#include "memory/allocation.hpp"
+#include "utilities/sizes.hpp"
+
 // There are various techniques that require threads to be able to log
 // addresses.  For example, a generational write barrier might log
 // the addresses of modified old-generation objects.  This type supports
@@ -293,3 +299,5 @@
   // Notify the consumer if the number of buffers crossed the threshold
   void notify_if_necessary();
 };
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_G1_PTRQUEUE_HPP